{"schema":"threatline.record/2","record":{"id":"CVE-2026-98810","aliases":[],"summary":"wifi: mac80211: fix slab-out-of-bounds read in ieee80211_monitor_select_queue()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: fix slab-out-of-bounds read in ieee80211_monitor_select_queue()\n\nieee80211_monitor_select_queue() validates the skb length using skb->len\nbefore dereferencing pointers into skb->data to access the 802.11 header.\nHowever, skb->len includes data in both the linear head buffer and\nnon-linear fragments/pages. When AF_PACKET sends a packet large enough to\nbecome non-linear, the 802.11 header at skb->data + len_rthdr may extend\npast the linear head buffer even though skb->len appears sufficient.\n\nThis leads to a slab-out-of-bounds read when accessing hdr->frame_control,\nas the kernel reads beyond the allocated skb head buffer:\n\n  BUG: KASAN: slab-out-of-bounds in ieee80211_monitor_select_queue+0x1ed/0x220\n\nsyzbot has hit the same issues.\n\nFix this by checking skb_headlen(skb) (which gives the length of the\nlinear data region) instead of skb->len before dereferencing skb->data\npointers. This ensures the required bytes are actually present in the\nlinear portion of the skb.\n\nApply the same fix to ieee80211_validate_radiotap_len() which has the\nsame class of bug: it uses skb->len to validate accesses to skb->data,\nand to the corresponding checks in ieee80211_monitor_start_xmit(): for\ndrivers advertising NETIF_F_SG the skb is not linearized before\nndo_start_xmit, so the 802.11 header can be read past the linear\nbuffer there as well.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98810","source_modified_at":"2026-10-19T09:26:03.626Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"9b8a74e3482f9fc077a88c13fa0ceca8feb0b772","lessThan":"63e7064b4c1c4b540bf2f0cba47384f92ab95307","status":"affected","versionType":"git"},{"version":"9b8a74e3482f9fc077a88c13fa0ceca8feb0b772","lessThan":"6f63e919fe1e335b8abcb3a28bfd4804a98d875a","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98810","source_modified_at":"2026-10-19T09:26:03.626Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"2.6.24","status":"affected"},{"version":"0","lessThan":"2.6.24","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98810","source_modified_at":"2026-10-19T09:26:03.626Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"63e7064b4c1c4b540bf2f0cba47384f92ab95307","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98810","source_modified_at":"2026-10-19T09:26:03.626Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6f63e919fe1e335b8abcb3a28bfd4804a98d875a","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00162,"percentile":0.05096,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:48:56.733Z","modified_at":"2026-10-19T09:26:03.626Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98810","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:26:03.626Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98810","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/63e7064b4c1c4b540bf2f0cba47384f92ab95307"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6f63e919fe1e335b8abcb3a28bfd4804a98d875a"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:26:03.626Z","content_hash":"a44807c8ab8c5eee69d8055d2cbf83a213d0150c925065858d54c27110f6e0a4"}}